I'm not an irrigation guy, but those are odd looking. Do you know how long they've been installed?
I'm guessing they only water your flower beds or bushes? You should be able to find something with the same thread type to replace the head. If it is for a flower bed area, you should check out something like this shrub head sprinkler.
I'm guessing they only water your flower beds or bushes? You should be able to find something with the same thread type to replace the head. If it is for a flower bed area, you should check out something like this shrub head sprinkler.
